Duolingual is more than just a beneficial tool for those looking to master a new language. It also has become popular with language aficionados. However, regrettably, it seems that even this beloved platform also falls victim to the controversial Rule 34 phenomenon.
Numerous individuals stumbled upon that Duolingo™ + 34th rule union exist. It might come as a surprise, but apparently, there are fan-made illustrations based on characters of Duolingo which follow the infamous guideline that states "if it exists, there is porn of it."

Duolingo Rule 34 Hentai